Includes release protective device. After adsorption, there is not need to worry about touching your hands. It can released automatically with a slight pull. Designs to remove fine ferrous metal shavings, or bulk parts from wet or dry environment. swarf collector is designs to pick or cleaning up metal chip, shavings, screws, bolts and metal items. The workmanship will give you a excellent use with magnets, durables and safe for long use., Manufacturer: Xinsheinelry